Heater.



E. H. HELLER I E. REICH.

HEATER.

APPLICATION FILED Nov. 24, 1917.

Patented Apr. 22, 1919.

2 SHEETS-SHEET l.

E. H. HELLER L E. REICH.

HEATER.

APPLICATION HLED Nov. 24. |911.

Tl? y m. f y S m, wm @d f ms.. ma@ w VW M ma UNITED STATES PATENT OFFICE.

EUGENE H. 'KELLER AND ERNEST REICH, OF CHICAGO, ILLINOIS, ASSIGNORS TO THE HILL PUMP VALVE COMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

HEATER.

Specicaton of Letters Patent.

` Patented Apr. 2a, 1919.

Application filed November 24, 1917. Sera1-No.203,829`.

T 0 all whom. t may concern.'

Be it known that we, EUGENE H. HELLER, a citizen of the United States, and ERNEST REICH, a subject of the King of Hungary, but having filed the intention tol become a citizen of the United States, both residing at Chicago, county of Cook, and State of Illinois, have invented a new and useful Improvement in Heaters, of which the following is a specification.

The invention relates to heating elements, especially, though not exclusively, used for motor-driven vehicles and which employ as a heating fluid the spent gases obtained from the internal combustion engines.

Heating devices of the character specified in various construction and forms have been placed on the market and have been found an indispensable part of the equipment of motor vehicles. These devices, however, have not been constructed with a view to obtaining maximum eificiency for the reason that no unobstructed passage was assigned to the gases on the way frommthe exhaust pipe to the heater and even in the interior thereof the provision of controlling valves with attendant reduction in the cross section of the passage way caused a retardation of the flow of the gases without simultaneously radiating the heat thereof.

It therefore constitutes the principal object of the invention to provide a heating apparatus which is highly eliicient and possesses a great coeflicient of radiation, so that the heat of the exhaust gases raises the temperature in the vehicle in a comparatively short time and thereby contributes to the comfort of the `occupants of the vehicle.

A further object aims at the provision of improved means for controlling the passage of the fluid through the heating element, said means leavingthe cubical contents of the chambercontaining the means substantially unalteredin order to permit the fluid to completely fill the chamber. Y

It is also an object of the invention to provide a heater equipped with a protector maintained at a distance therefrom to serve as a foot rest, said protector being capable of convenient and rapid assembly and removal without possible injury to the parts of the heating element.

A further object embraces the provision of a heater including a tubular body member and chambered end members communicating with said body member and equipped with means for maintaining the protector in operative position.

To the accomplishment of the objects stated and others that will become apparent from the specification and claims forming part thereof, the invention is predicated on the means set forth hereinafter.

An embodiment of the invention is illustrated by way of example in the accompanying drawings, in which- Figure l is a longitudinal section through a motor vehicle with the heating element arranged in front of the seat, c

Fig. 2 is a front view of the heating apparatus and its connections to the exhaust P1136,

F ig. 3 is a perspective view of the protector for the heater,

Fig. 4 is a longitudinal sectional view of the heater with the protector removed,

Fig; 5 is an end View of the same,

Figs. 6 and 7 are respectively front view and side view of the disk valve controlling the passage of the gases to the heater.

Fig. 8 isla detailed section of the connection between the exhaust pipe and a tube leading to the heater, and

Fig. 9 is a section on the line 9--9 of Fig. 8.

Referringv to the drawings, l designates the tubul'ar body member of the heater having suliicientlength to extend the major part of the width of a vehicle with which the heater is employed. The tube l is received within chambere'd end members or castings 2- and 3, which extend at right angles to the longitudinal vaxis of the body member and terminate in tubes 4: and 5, to the former of which ahose or flexible tube is secured for a purpose hereinafter specified.

The casting 3 at its upper portion forms a cap or closure for the tube 1 and contains va chamber forming a continuation of the bore of the body member l. The casting has a partition 6 equipped with an opening 7 having a diameter slightly less than the bore of tube 5 so that the gases escaping from the body member l through the tube 5 are slightly retarded.

The casting 2 does not contain a partition, and an aperture 9' establishing communication between the casting chamber and the tube 4 has the same diameter as the bore of the tube, thus offering no resistance to the passing gases.

The casting 3 is provided interiorly and centrally thereof with a hub 10, into which a rod 11 is threadedly inserted, which extends through the casting 2 and serves as a means for maintaining the parts of the heater in assembled relation. As will be seen by reference to Fig. 4, the castings 2, 3 are provided at the inner ends withV rabbets,

vwhereby shoulders 12 are formed, and between said shoulders and the tube 1 a packing ring 13 is inserted to provide an airtight joint and thereby prevent leakage of the gases.

The casting 2, similarly as casting 3, forms a closure for the tube 1, and is provided at its inner portion with an aperture 14 for the passage of the rod 11.Y Exteriorly and centrally of the cap forming part of the casting 2, an annular flange 15 is provided, having a smaller diameter than the cap portion of the casting 2 and serving as a casing for the reception of several parts to be hereinafter described. Y

As will be seen by reference to Fig. 5, the ange 15 is cut away, as at 16, to permit oscillation of a handle 17, which is secured to a valve 18 arranged in the interior of the casting 2. The valve 18 comprises an arcuate curved plate 19 of a curvature corresponding to the curvature of the casting wall and adapted to control the opening 9, so that according to the position occupied by the disk 19, the passage is partially or totally restricted, or entirely uncovered.

The plate 19 is in nested relation with respect to the wall portion of the casting and as it substantially does not restrict the cubical contents of the casting chamber, the gases lpassing through the opening 9 are permitted to fill completely the casting chamber.

The plate 19 passes over into the vertical portion 20, which is arranged on a hub 21 of the handle 17 and which is countersunk at its rear end as at 23, to receive a packing 24, which prevents leakage of the gases in case the latter wiredraw past the inner portion of the hub 21. A packing rin 25 is provided between the handle 17 and t e wall 26 of the casting 2. A spring 27 surrounds the rear portion of the hub 21 and is held in engagement with the handle 17 by means of a plate 28 acting as a cover for the annular flange 15 and maintained in position by a nut 29 secured t0 the projecting end of the through rod 11.

From the foregoing it is obvious that theY annular flange 15, together with the plate 28, acts as a casing for the reception of the hub portion 21, the spring, and the various packing rings necessary to maintain an air-tight closure and prevent leakage. The cut away portion 16 permits oscillation of the handle 17 within the arc limited by the shoulders 30 formed by the cut away portion. The castings 2 and 3 are formed with integral extensions 31, 31 extending transversely of the longitudinal direction of the heating ele- 'ment and provided with apertures 32 for the reception ofrscrews or the like, whereby the heating element may be securely fastened to the floor of the vehicle. Each Vcasting is equipped at two sides with lugs 33, arranged at diametrically opposite points and forming abutments against which clamping members 34 of a protector plate 35 abut, so that the latter is prevented from moving in a longitudinal direction on the heater. The protector is coextensive with the heating element and is maintained at a distance therefrom throughout its length; it therefore can be used las a foot rest.

In assembling the heater, the casting 3 receives a packing ring 13, whereupon it is placed in position on the tube 1 subsequent to the insertion of the rod 11. Thereupon the protector plate 35 is pushed over thetube 1 in longitudinal direction, the casting 2 together with its appurtenances, is placed in position, and then the nut 29 is tightened to maintain these parts in assembled relation.

ttention is called to the fact that the tightening of the parts is limited by the engagement of the tube 1, the packing ring 13, and the castings 2, 3, so that the strain set up by the tightening Vis not transmitted to the protector or guard 35 which is in clamping enggement with the castings by virtue of the leaf springs 34, and is prevented from movement in longitudinal direction by the provision of the lugs 33 extending laterally from said castings. Y

The tubular extension 4 of the casting 2 receives a tube 36 which establishes communication between the heating element and an exhaust pipe 38. In order to connect the tube 36 to the exhaust pipe a fitting 39 is provided which comprises a tubular Vportion 40 for the reception of the lower end of the tube 36 which is secured by a screw 37. The fitting 39 is provided with an arcuate seat to be supported by the exhaust pipe 38. Attention is called to the fact that the arcuate seat of the fitting 39 covers only a small portion of the circumference of the exhaust pipe 38, so that the fitting 39 may be applied to exhaust pipes of different diameters as shown in dotted lines in Fig. 9, and insure air-tight connection therewith.

As is indicated in Fig. 8, a gasket 41 is provided between the seat of the fitting and the exhaust pipe so as to prevent leakage.

In view of the fact that the opening 7. in

Vcasting 3 has a smaller diameter than the To establish communication between the exhaust pipe and the tube 36 an opening 42 is provided in front of the muffler 8 which permits the passage of the gases from the pipe 38 into the tube 36. The fitting 39 is formed with slotted ears 43 and to secure the fitting 39 in place so that the tube 36 registers with the opening 42 a band 44 is provided, terminating in screw-threaded rods 45 which project through the slotted ears 43 and receive tightening nuts 46.

The connection of the fitting 39 to the exhaust pipe has been accompanied by a degree of uncertainty, inasmuch as, due to the ,tightening of the nuts 46, shifting of the fitting was possible on the exhaust pipe 38, thereby preventing the establishment of registry between the bore of the pipe 36 and the aperture 42. To remove every element of doubt in the present case, the fitting 39 is equipped with an annular flange 47, forming a shoulder which projects into the aperture 42. At one side the flange is extended to form a tongue 48 terminating beyond the longitudinal center of the exhaust pipe and acting as a deflector for directing the flow of the spent gases. From the foregoing it is evident that l the arrangement of the fitting 39 on the exhaust pipe, by reason of the entranceof its flange 47 in the aperture 42, makes shifting of the casting, due to tightening, impossible, and hence insures at all times an unobstructed passage for the exhaust gases. As will be seen by reference to Fig. 1 the heating element is arranged in front of the seat 50 to act as a foot rest but it is within the scope of the present invention to arrange the heater at any other place wherever convenient.

The operation of the device is as follows:

Then the interior of a motor vehicle equipped with the improved device is to be heated, the occupant of the seat adjacent to the device actuates the valve handle 17 to uncover the opening 9 of the casting 2 whereupon the exhaust gases deflected by the tongue 48 flow through the pipe 36 past the opening 9 into the casting 2. It is significant that upon oscillation of the disk valve 18 the entire interior of the casting 2 vis available for the inrushing gases and no restri ction of volume due to the presence of devices controlling the passage of the gases is entailed. This results in the retardation in the flow of the gases, the casting 2- acting as a retardation chamber whereby the maj or portion of the heat is given off to the wall portion of the casting 2 and thence radiated. The tube 1 and casting 3 providing a continuous chamber of like dimensions the gases flow with little resistance until they reach the opening 7 through which they escape to the atmosphere.

1t is evident that the passage of the gases from the exhaust pipe to the heating element is not accompanied by any throttling so that upon entrance of the gases to the heater the comparatively large interior thereof retards the gases. This contributes to a marked degree to the efficient radiation of heat to which the back pressure at the egress end of the heating element also contributes.

While the drawings indicate the preferred embodiment of the invention it is not our-intention to confine ourselves strictly to the` structural details as shown but rather want to avail ourselves of any changes constituting departures within the scope of our invention as set forth in the appended claims.

We claim:

1. A heating device, comprising a tubular body member, chambered end members for said body member, the chambers of said end members communicating with the interior of said body member, means for conducting a heating fluid through said members, and an element in one of said end members and in nested relation with the wall thereof throughout its movement for controlling the communication to said fluid conducting means.

2. A heating device, comprising a tubular body member, caps forming closures for said body member,.means for conducting a heat` ing fluid through said caps and body member, and a curved plate conforming to the interior wall portions of one of said caps and in sliding Vengagement therewith, said plate controlling the communication with said conducting means.

3. A heating device comprising in combination a tubular body member, chambered supports arranged at the ends of said body member, the chambers of said supports communicating With the interior of said tubular member, means for conducting a heating Huid through said supports and body member, and a valve in one of said supports for controlling the communication with said conducting means, said valve comprising a vertical straight portion and an arcuate horizontal portion to adhere tocorresponding wall portions of one of said supports and thereby leave the cubica] contents of said support chamber substantially unaltered.

4. A heating device, comprising in combination a tubular body member, chambered supports arranged at the ends of said body member, means for conducting a heating fluid through said supports and body member, a guard coextensive with the heating device, resilient means for maintaining said guard at a distance from said body member, and means integral with said supports for preventing longitudinal movement of said guard.

5. A heating device, comprising in combination a tubular body member, chambered supports arranged at the ends of said body member, means for conducting a heating fluid through said supports and body member, means for securing said body member and supports in assembled relation, a guard coeXtensive with the device, springs on said guard embracing said device, and lugs eX- 1tending laterally from said supports to prevent longitudinal movement of said guard.

6. A heating device, comprising in combination a tubular body member, hollow castings surrounding the ends of said tubular `body member, means for conducting a heating fluid through said castings and body member, aV guard lcoextensive with the device and maintained at a distance therefrom, Imeans for securing said castings and said body member in assembledV relation, and means for preventing transmission of the pressure caused by said securing means to said guard.

In testimony whereof we have herewith set our hands.

EUGENE H. HELLEE. ERNEST REICH.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. l 

